rems

Biological exposure measures

Rems is the plural of rem, a unit measuring radiation absorbed by living tissue.

The name comes from "roentgen equivalent man." A typical chest X-ray delivers a fraction of a rem; exposure above 100 rems causes radiation sickness.

In web design, rem is a CSS unit based on the root element's font size: The heading is set at 2 rems.

radiation

roentgen

Radiation exposure unit

gray · rad · ionizing · nuclear · X-ray · gamma · radioactivity · contamination · fallout · shielding

sleep

rapid eye movement

Slumber stage with darting gaze

deep sleep · paradoxical · brain waves · EEG · sleep stages · circadian · insomnia · sleep study · vivid dreams · sleep paralysis

typography

em

Typographic measurement unit

spacing · responsive · web design · pixels · points · scalable · layout · stylesheet · accessibility · baseline

Phrases
Family

remiss, remit, remission, unremitting, remitting, rem, remitter, remittal, remittable

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